From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 20 Oct 2006 11:08:29 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [RFC] virtual memmap for sparsemem [2/2] for ia64. Message-Id: <20061020110829.f492d370.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: References: <20061019172328.4bcb1551.kamezawa.hiroyu@jp.fujitsu.com> <20061020103534.35a92813.kamezawa.hiroyu@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: linux-ia64@vger.kernel.org, linux-mm@kvack.org List-ID: On Thu, 19 Oct 2006 18:45:18 -0700 (PDT) Christoph Lameter wrote: > > Then, considering PAGE_SHIFT=14 case, > > 4-level-page-table mapsize:(1 << (4 * PAGE_SHIFT - 9) -> (1 << 47) > > 3-level-page-table mapsize:(1 << (3 * PAGE_SHIFT - 6) -> (1 << 36) > > You are missing one PAGE_SHIFT (the page that is referred to !) > > 3 level is 47. 4 level is 58. > (>_<)!!! Thank you -Kame -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org